Klimawandel
New studies indicate that stronger winds and warming deep ocean water have triggered a sharp decline in Antarctic sea ice since 2016. Previously expanding, the ice reached a record high in 2014 before plummeting to record lows. Researchers link this shift to wind-driven upwelling of circumpolar deep water.
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Building on recent studies like Stefan Rahmstorf et al.'s analysis showing a doubling of Earth's warming rate to ~0.36°C per decade since 2014, scientists disagree on whether reductions in aerosol pollution or natural fluctuations are driving the speedup. Nearly all agree warming has accelerated, but views differ on causes, rate, and future trajectory—with implications for climate sensitivity and adaptation.
A massive algal bloom has devastated marine life in South Australia over the past eight months, killing around one million animals across more than 550 species. Researchers have identified the culprit as Karenia cristata, a species producing a newly discovered toxin that could spread worldwide. The event, one of the most destructive on record, raises concerns about emerging threats to global oceans.
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New research suggests that climate change increased the likelihood of Hurricane Melissa by four times. The storm, fueled by unusually warm ocean temperatures, ranks among the worst hurricanes on record.